3-Hydroxyphenylboronic Acid-Based Carbon Dot Sensors for Fructose Sensing

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Crista, DMA (Author) Other; Mello, GPC (Author) Other; Shevchuk, O (Author) Other; Sendao, RMS (Author) Other; Simoes, EFC (Author) Other; Leitao, JMM (Author) Other; da Silva, LP (Author) FCUP; Joaquim C G E Esteves da Silva (Author) FCUP

Journal

Title: Journal of Fluorescence

Vol. 29

Pages: 265-270

ISSN: 1053-0509

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 16 Citations

Scopus - 19 Citations

Other information

Authenticus ID: P-00Q-2JF

DOI: 10.1007/s10895-018-02336-2

Abstract (EN): The selective fluorescence sensing of fructose was achieved by fluorescence quenching of the emission of hydrothermal-synthesized carbon quantum dots prepared by 3-hydroxyphenylboronic acid. Quantification of fructose was possible in aqueous solutions with pH of 9 (Limit of Detection L-OD and Limit of Quantification L-OQ of 2.04 and 6.12mM), by quenching of the emission at 376nm and excitation similar to 380nm with a linearity range of 0-150mM. A Stern-Volmer constant (K-SV) of 2.11x10(-2)mM(-1) was obtained, while a fluorescent quantum yield of 31% was calculated. The sensitivity of this assay towards fructose was confirmed by comparison with other sugars (such as glucose, sucrose and lactose). Finally, the validity of the proposed assays was further demonstrated by performing recovery assays in different matrixes.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6